29138906 has 16 divisors (see below), whose sum is σ = 45337344. Its totient is φ = 14034384.

The previous prime is 29138891. The next prime is 29138929. The reversal of 29138906 is 60983192.

It is a self number, because there is not a number n which added to its sum of digits gives 29138906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5711 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (2833584).

Almost surely, 2^29138906 is an apocalyptic number.

29138906 is a deficient number, since it is larger than the sum of its proper divisors (16198438).

29138906 is a wasteful number, since it uses less digits than its factorization.

29138906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 29138906 is about 5398.0464985030. The cubic root of 29138906 is about 307.7214339127.

The spelling of 29138906 in words is "twenty-nine million, one hundred thirty-eight thousand, nine hundred six".